Rail mount



FIG. 1 is a front, right and top perspective view of a rail mount, showing my design;

FIG. 2 is a rear, left and top perspective view thereof;

FIG. 3 is a rear, left and bottom perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines in the drawings depict unclaimed portions of the rail mount only, which form no part of the claimed design. 

CLAIM The ornamental design for a rail mount, as shown and described. 